Cita APA (7a ed.)

Kelly, L. G. (1976). 25 centuries of language teaching: An inquiry into the science, art, and development of language teaching methodology, 500 B.C.-1969. Newbury House.

Cita Chicago Style (17a ed.)

Kelly, L. G. 25 Centuries of Language Teaching: An Inquiry into the Science, Art, and Development of Language Teaching Methodology, 500 B.C.-1969. Rowley, Massachusetts: Newbury House, 1976.

Cita MLA (9a ed.)

Kelly, L. G. 25 Centuries of Language Teaching: An Inquiry into the Science, Art, and Development of Language Teaching Methodology, 500 B.C.-1969. Newbury House, 1976.